Square D | MHB36800 | Circuit Breaker | 800A | 3-Pole | 600V

Square D MHB36800 Circuit Breaker is a heavy-duty three-pole, 800-amp device designed for 600-volt systems, delivering reliable overcurrent protection in industrial electrical panels.

Engineered for maintenance, retrofit, and replacement projects where exact spec matching is essential, this MHB36800 part number ensures you preserve protective characteristics and panel fit without improvisation.

Key specifications

• Amperage: 800A
• Poles: 3-Pole
• Voltage: 600V

Why this model matters

Choosing the exact part number MHB36800 isn't just about numbers—it's about ensuring the same protection profile, mounting geometry, and terminal configuration as your original equipment. With a matching 800A rating, 3-pole design, and 600V rating, you reduce the risk of misfits that can lead to nuisance trips or enclosure conflicts. This makes it an ideal choice for upgrading or replacing aging breakers in demanding industrial environments.

Fit and compatibility

• Best reference: Use the MHB36800 part number to verify compatibility with your Square D panel and accessories.
• Before you order: Confirm fit and ratings match your panel’s documentation and the electrical system requirements.
• What to check: Panel model, bus configuration, mounting style, and enclosure rating to ensure a seamless replacement or retrofit.

Ideal use cases

• Retrofit projects where an exact 800A, 3-pole, 600V profile is needed to match existing protection schemes.
• Replacement of aging or failed breakers in heavy-duty industrial panels that protect motors and feeders.
• New installations in systems designed for 600V with three-phase protection, requiring robust, localized overcurrent protection.

Installation and maintenance tips

Work with a qualified electrician to install the Square D MHB36800 circuit breaker. After installation, verify proper tripping characteristics and ensure labeling in the panel corresponds to the MHB36800 reference. Keep spare units in their original packaging until needed to avoid contamination or damage. Follow manufacturer guidelines for terminal torque and ensure appropriate clearance and ventilation within the panel enclosure.

With Square D’s reputation for reliability and a direct part-number match, the MHB36800 delivers dependable protection for demanding 600V, 800A three‑pole circuits, helping you maintain uptime and safeguard valuable equipment.